Found dead. Stephen Rakes arrives for the first day of accused mob boss James "Whitey" Bulger's trial at the US Federal Courthouse in Boston.REUTERS

James “Whitey” Bulger (AP)

BOSTON — A man who had hoped to testify in the ongoing racketeering trial of reputed mobster James “Whitey” Bulger and vocally criticized him has been found dead, authorities said Thursday.

The body of Stephen Rakes was found Wednesday afternoon in Lincoln, Mass., with no obvious signs of trauma, the Middlesex District Attorney’s Office said. Authorities were conducting an autopsy to determine the 59-year-old Quincy man’s cause and manner of death.

Prosecutors say Rakes and his former wife were forced to sell Bulger their South Boston liquor store in 1984 to use as a headquarters for his gang and as a source of legitimate income. But a government witness gave a differing account on the stand last week.

Rakes attended Bulger’s trial every day through Tuesday, when was last seen there.

Rakes’ former wife, Julie Dammers, said in a telephone interview Thursday that she knew of his death, but asked for privacy.

Bulger, the former leader of the Winter Hill Gang, spent 16 years on the run, becoming one of the FBI’s Ten Most Wanted before authorities captured him and his girlfriend in California in 2011. He is charged with participating in 19 murders but maintains his innocence.

Rakes was a vocal critic of Bulger leading up to the trial, saying in April when Bulger appeared in court for the first time in about two years that he began hyperventilating when he first saw the defendant. Rakes said Bulger wouldn’t look his way.

“The day I see him in a box, not breathing, will be better,” Rakes told The Associated Press that day.

Rakes was eager to get on the witness stand, according to Tommy Donahue, son of alleged Bulger victim Michael Donahue. But prosecutors told the judge Tuesday who their remaining witnesses would be and Rakes wasn’t among them.

“He said he wanted to get up there and tell his side of the story,” Donahue said Thursday.

Rakes was upset when he left the courthouse Tuesday, said Steven Davis, the brother of alleged Bulger victim Debra Davis. But Davis said he wasn’t sure why.

Davis said he had repeatedly called Rakes, a friend of his, since Tuesday but had not heard back.

Last week, the testimony of Bulger’s former right-hand man, Kevin Weeks, included his account of how Bulger acquired Rakes’ liquor store nearly three decades ago.

Weeks denied that the gang forced Rakes to sell the store, saying Rakes had agreed to an offer from Bulger to buy the store for $100,000.

He said when they arrived at Rakes’ house to close the deal, Rakes said his wife didn’t want to sell the store and complained about the selling price.

“He was trying to shake us down,” Weeks said from the witness stand.

Weeks said he pulled a gun out of his waistband and put it on a table, in front of Rakes’ two young daughters, who were in the room. One of the girls was bouncing on Bulger’s lap and reached for the gun, and Bulger told Weeks to put it away.

Bulger told Rakes that he couldn’t back out of the sale and they made the deal, according to the testimony.

Rakes was present for the testimony and later disputed the account, saying he was forced to sell the liquor store.

“Kevin continues to lie, as usual, because that’s what he has to do,” Rakes said that day. “My liquor store was never for sale — never, never, never.”

Meanwhile, another witness and former Bulger associate Stephen “The Rifleman” Flemmi, has taken the stand today.

Prosecutors say they were partners in crime, gangsters who together led a criminal organization that ruled Boston’s underworld for more than two decades through fear, intimidation and violence.

The two men saw each other for the first time in almost 20 years, when Flemmi took the witness stand against Bulger in his racketeering trial, a few minutes before the day’s court session was to end.

As he was led into the witness box for what promised to be a tense meeting, Flemmi gave Bulger a long, hard stare, and Bulger glanced over at him.

Flemmi will be asked to name Bulger as a killer, an FBI informant and the man who he watched strangle two 26-year-old women.

Bulger has already had two profanity-laced outbursts during the trial, one directed at his former protege, Kevin Weeks, and the other at a former FBI agent who admitted taking payoffs from Bulger.

Investigators say Flemmi’s testimony will be the ultimate betrayal to Bulger, given their long relationship as criminal partners and friends.

“These guys were equal partners. One was not subservient to the other,” said Michael Kendall, a former federal prosecutor who investigated several of Bulger’s associates.

“Now, with Flemmi testifying against him, I think it’s going to be like when Dracula fights Frankenstein — the two personifications of evil at each other’s throats,” he said.